From patchwork Mon Apr 26 07:18:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 427602 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE85EC43462 for ; Mon, 26 Apr 2021 07:18:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8474D611C0 for ; Mon, 26 Apr 2021 07:18:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232165AbhDZHTN (ORCPT ); Mon, 26 Apr 2021 03:19:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232172AbhDZHTM (ORCPT ); Mon, 26 Apr 2021 03:19:12 -0400 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 746D0C061574; Mon, 26 Apr 2021 00:18:29 -0700 (PDT) Received: by mail-pj1-x1029.google.com with SMTP id lt13so17597301pjb.1; Mon, 26 Apr 2021 00:18:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6RWbIvonEByJpfvCiy66ZaoSzZ4OjH7yQjNFQ9CvawY=; b=bRxMljdwsCQS7y6jWqX1ASjdJ/EaPibEQOfYE9HBYNOBnvdtXMC+vAjgzTeyNaLTuc jMCPuzAIVFp49Y0BbQTP8g117k69hHOM8PpqNQwFML1cr2DE0FffE7TKByjAyaDC0NSH z46+arR16GMbBE22FnfNmeDAPmnwZM+cQJVDv5sESlHsPeNxM7hQ+CHqsRsJ7OlzrZ7U IKn+oQAXTCKYcw1okQYtSiDXvqcjLKfj4ICZgWeWdWeua5asVPoi/P/Fjsv8hLfYc44P bJyMhl3D8mSp07EfRG6aKoiBiZI5zHLJTE4O5npD+MihOjMArODjumwybiHlCpsxwaJh 9WJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=6RWbIvonEByJpfvCiy66ZaoSzZ4OjH7yQjNFQ9CvawY=; b=lQ9+oHf21CyYaLFom4OBjIvnt78RT0ediD4eBUxEv3VUEpMExejApr1BdgKJdWejJX Pqnir5wzwqWf6R5A02uSExqhFIvXRjQUQ2EKd7BlDcZ2YB0IUh6nH4buw3PS+Sq3FR7S 4hS2h/jZR00MWXkuT6KpkqClQ2s6bdxGeFoHVKpJAIsNBr4c5yyo6GeCm/0pSnGA0t0k ya5PWGIecp02PIDWuKsVb5TTKHnC6bFZqq6xLvr3T/f9tfMeeTLkXv0Un+BneKEd3Ckt j2GcLVEn4eBMDPOmmc52ro12C/W6ii9KV/tIr+USQu7kxzOyGrXQogrFHM2m0OjYWTZ5 H+NQ== X-Gm-Message-State: AOAM5302iCwaVKk2phlkUGlcS2vyC5krzC9ck3hmHvawD5v+/DxOIx/a 9B3C17H5BdDFdQa8GBXar6Q= X-Google-Smtp-Source: ABdhPJz9oU/l7nsklYCyOUk8PRxry7EV053Hh6tqqIUf/PcLLqIJJPzHxQ+RApOHOe7KA/oLknQCmg== X-Received: by 2002:a17:902:6b0a:b029:ec:9899:6a2 with SMTP id o10-20020a1709026b0ab02900ec989906a2mr17304616plk.31.1619421509387; Mon, 26 Apr 2021 00:18:29 -0700 (PDT) Received: from localhost.localdomain ([2402:7500:492:3af5:75cd:677a:81f7:a9fe]) by smtp.gmail.com with ESMTPSA id u21sm9848952pfm.89.2021.04.26.00.18.25 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 26 Apr 2021 00:18:28 -0700 (PDT) From: cy_huang To: lee.jones@linaro.org, lgirdwood@gmail.com, broonie@kernel.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, b.zolnierkie@samsung.com, pavel@ucw.cz, robh+dt@kernel.org Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, cy_huang@richtek.com Subject: [RESEND PATCH v6 3/4] mfd: rt4831: Adds DT binding document for Richtek RT4831 Date: Mon, 26 Apr 2021 15:18:10 +0800 Message-Id: <1619421491-31494-3-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1619421491-31494-1-git-send-email-u0084500@gmail.com> References: <1619421491-31494-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Adds DT binding document for Richtek RT4831. Signed-off-by: ChiYuan Huang Reviewed-by: Rob Herring --- Resend this v6 patch series to loop devicetree reviewers. --- .../devicetree/bindings/mfd/richtek,rt4831.yaml | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml new file mode 100644 index 00000000..4762eb1 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/richtek,rt4831.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT4831 DSV and Backlight Integrated IC + +maintainers: + - ChiYuan Huang + +description: | + RT4831 is a multifunctional device that can provide power to the LCD display + and LCD backlight. + + For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. + It's sufficient to meet the current LCD power requirement. + + For the LCD backlight, it can provide four channel WLED driving capability. + Each channel driving current is up to 30mA + + Datasheet is available at + https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf + +properties: + compatible: + const: richtek,rt4831 + + reg: + description: I2C device address. + maxItems: 1 + + enable-gpios: + description: | + GPIO to enable/disable the chip. It is optional. + Some usage directly tied this pin to follow VIO 1.8V power on sequence. + maxItems: 1 + + regulators: + $ref: ../regulator/richtek,rt4831-regulator.yaml + + backlight: + $ref: ../leds/backlight/richtek,rt4831-backlight.yaml + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + rt4831@11 { + compatible = "richtek,rt4831"; + reg = <0x11>; + + regulators { + DSVLCM { + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <7150000>; + regulator-allow-bypass; + }; + DSVP { + regulator-name = "rt4831-dsvp"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6500000>; + regulator-boot-on; + }; + DSVN { + regulator-name = "rt4831-dsvn"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6500000>; + regulator-boot-on; + }; + }; + + backlight { + compatible = "richtek,rt4831-backlight"; + default-brightness = <1024>; + max-brightness = <2048>; + richtek,bled-ovp-sel = /bits/ 8 ; + richtek,channel-use = /bits/ 8 ; + }; + }; + };